Search Publications
Deep XMM survey of M33
Pietsch, W.; Haberl, F.; Ehle, M. +2 more
In an XMM raster observation of the bright local group spiral galaxy M33 we study the population of X-ray sources (X-ray binaries, supernova remnants, super-shells) down to a 0.5-10 keV luminosity of \oergs{35} - more than a factor of 10 deeper than earlier ROSAT observations. EPIC spectra and hardness ratios are used to distinguish between differ…
XMM-Newton view of the Hubble Deep Field-North and Groth-Westphal strip regions
Griffiths, R. E.; Miyaji, T.; Lumb, D. +2 more
We report the progress on our analysis of two deep XMM observations in the areas of Hubble Deep Field-North and the Groth-Westphal Strip field. We present the source detection method, Monte-Carlo simulation on source detection, and our preliminary Log N - Log S relations. Comparing these two fields and other fields in literature, we find up to ∼ 3…
The XMM-Newton Survey Science Centre Medium Sensitivity Survey
Pérez-Fournon, I.; Page, M. J.; Barcons, X. +5 more
We present preliminary results on the XMM-Newton Survey Science Centre medium sensitivity survey, with 0.5-4.5 keV flux limit 2x 10-14 erg cm-2 s-1. At present, 19 fields have been examined with a total of 239 X-ray sources. Identifications for about 2/3 of these reveal that type 1 AGN dominate, but type 2 AGN, abs…
XMM-Newton local bubble and galactic halo survey
Freyberg, M. J.; Breitschwerdt, D.
Optical identifications in the Marano field XMM-Newton survey
Hasinger, G.; Mignoli, M.; Zamorani, G. +4 more
The ``Marano field'', a deep optical quasar survey field, has been observed by the XMM Newton EPIC camera with 16 overlapping pointings totalling at ~ 120 ksec integration time. Source detection in the merged observations resulted in more than 600 X-ray sources. Here we present the status of optical follow up observations which were undertaken to …
Structure of a simple sunspot from the inversion of IR spectral data
Krupp, N.; Woch, J.; Solanki, S. K. +5 more
Analysis of spectral data of two neighboring infrared lines, Fe i 15648.5 Å (g = 3) and Fe i 15652.9 Å (g_eff = 1.53) are carried out for a simple sunspot when it was near the solar disk center (mu = 0.92), to understand the basic structure of sunspot magnetic field. Inversions of Stokes profiles are carried out to derive different atmospheric par…
Radio observations of the XMM-Newton/Chandra 13hr deep survey field
Page, M. J.; Seymour, N.; Sasseen, T. +9 more
Our VLA observations of the XMM-Newton/Chandra 13hr deep survey field (see Page et al., this proceedings) result in one of the two deepest 1.4GHz radio maps ever made. Within the 15' radius field covered by the deep X-ray data (0.19 deg2), a total of 556 radio sources are detected, down to a 4sigma flux limit of 28mu Jy. Of the 214 Chan…
XMM-Newton observation of the Marano Field
Hasinger, G.; Wilms, J.; Staubert, R. +2 more
X-ray spectra of XMM-Newton AXIS serendipitous sources
Barcons, X.; Carrera, F. J.; Mateos, S. +2 more
We have carried out a broad-band spectral analysis of X-ray sources detected serendipitously with the EPIC-pn instrument onboard XMM-Newton in AXIS fields. Our total catalogue contains 1837 X-ray sources detected in the energy band 0.5-4.5 keV down to a flux of ~ 3x 10-15 erg cm-2 s-1. Optical identifications are a…
Flare stars in the TW Hydrae association: the HIP 57269 syste
Neuhäuser, R.; Guenther, E. W.; Hambaryan, V. +1 more
We discuss a new member candidate of the TW Hydrae association (TWA) among the stars of the Gershberg et al. ( te{gershberg}) flare star catalog. TWA is one of the closest known associations of young stars at about 60 pc. Three supposedly young flare stars are located in the same region of the sky as TWA. One of them (